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yilianblanco
04.06.2021 •
Mathematics
(w- 4/9) (-2/3) = -4/5
Solve for w
Solved
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Ответ:
exact form:
w= 74/45
decimal form:
w= 1.64
mixed number:
w= 1 29/45
brainliest would be appreciated :)
Ответ:
w=74/45
Step-by-step explanation:
(w-4/9)(-2/3)=-4/5
-2/3w+8/27=-4/5
-2/3w=-4/5-8/27
-2/3w=-108/135-40/135
-2/3w=-148/135
w=(-148/135)/(-2/3)
w=-148/135*-3/2,
w=74/45
Ответ:
Ans: P = 22.5% and Cl = 77.5%
Given:
Total Mass of sample containing P and Cl = 50.51 g
Mass of P produced = 11.39 g
To determine:
Mass % of P and Cl
Explanation:
Mass % of a given element in a total mass is generally expressed as:
Mass % of element = [mass of element/total mass]*100
Here,
Total mass = mass of P + mass of Cl
mass of Cl = Total - mass of P = 50.51-11.39 = 39.12 g
% P = [11.39/50.51]*100 = 22.5%
%Cl = [39.12/50.51]*100 = 77.5%